The simple yet sleek app provides access to more than 270 easy-to-use clinical decision tools including risk scores, algorithms, equations, formulas, … iPhone. Join the millions of medical professionals who use MDCalc daily to support clinical decision making at the bedside. Since 2005, MDCalc has been the leading medical reference for the most relevant, up-to-date and widely-used clinical calculators that support evidence-based patient care. Registration is free and takes less than 30 seconds ... MD Calc · Temas, Especialidades, Multidisciplinar · Recursos de información · Tipos de recursos, Calculadoras · Xunta de Galicia.These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients. Have feedback about this calculator? The Revised International Prognostic Index (R-IPI) for Diffuse Large B-cell Lymphoma predicts overall and progression free survival based on risk factors.Prince Frederick, MD 20678. Directions. Mailing Address 175 Main Street Prince Frederick, MD 20678. Phone: 410-535-1600, ext. 2511. Fax: 410-535-2181. Interactive Maps. Historic Maps. Hard Copy Maps. Topo Map Series. Open GIS Data. Policies and Services. Other Resources. Tips and FAQs. Employment View current openings ...Estimates mortality for patients with unstable angina and non-ST elevation MI. When to Use. Pearls/Pitfalls. Why Use. Age ≥65. No 0. Yes +1. ≥3 CAD risk factors. Hypertension, hypercholesterolemia, diabetes, family history of CAD, or current smoker.EDUCATIONAL BACKGROUND. MD Medicine 1989, Thesis Medicine 1990. University of Mainz, Germany. TEACHING INTERESTS. Medical Microbiology; Immunology. COURSE LIST ... team. Join Us Scientific Advisory Board Editorial Board Careers Contributors. Calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for clinical judgment. See our full disclaimer. The MELDNa/MELD-Na Score for Liver Cirrhosis adds sodium to the MELD model to evaluate liver cirrhosis severity. Ensure proper room lighting and set phone brightness to 100%. Hold the screen 4 feet (1.2 m) from the patient (approximately the end of a standard hospital bed if patient is sitting upright). Test each eye independently. The patient should completely cover the opposite eye. See Pearls/Pitfalls for further instructions.Launched during COVID-19 crisis. Tips for COVID-19: Use to determine floor vs. ICU. Assesses lung functions, especially for patients on ventilators. When to Use. PaO 2. mm Hg. FiO 2. See Evidence for estimating FiO₂ from oxygen flow/delivery rates. %.Yes +1. Renal disease. Dialysis, transplant, Cr >2.26 mg/dL or >200 µmol/L. No 0. Yes +1. Liver disease. Cirrhosis or bilirubin >2x normal with AST/ALT/AP >3x normal. No 0. Yes …The University of Texas MD Anderson Cancer Center. Menu Close. Clinical Trials ... MD Anderson logo. © 2024 The University of Texas MD Anderson Cancer Center.Sepsis-3 Consensus Definitions are frequently cited as one paradigm. For patients under 18, please use the Pediatric SIRS, Sepsis, and Septic Shock Criteria. When to Use. Pearls/Pitfalls. SIRS Criteria (≥2 meets SIRS definition) Temp >38°C (100.4°F) or <36°C (96.8°F) No. Yes.Join Us Scientific Advisory Board Editorial Board Careers Contributors. Calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for clinical judgment. See our full disclaimer. The Barthel Index for Activities of Daily Living (ADL) assesses functional independence, generally in stroke patients.These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients. Have feedback about this calculator? The Revised International Prognostic Index (R-IPI) for Diffuse Large B-cell Lymphoma predicts overall and progression free survival based on risk factors.There is no completely safe opioid dose, and this calculator does not substitute for clinical judgment. Use caution when prescribing opioids at any dosage, and prescribe the lowest effective dose. Conversions are based on the CDC Clinical Practice Guideline for Prescribing Opioids for Pain — United States, 2022.These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients. Have feedback about this calculator? The National Early Warning Score (NEWS) determines the degree of illness of a patient using six physiological findings and one observation.Manjunath Pai, PharmD, is a professor in the Department of Pharmacy Practice at the Albany College of Pharmacy. He is the author of “The Origin of the 'Ideal' Body Weight Equations”, a comprehensive literature review on the creation of and iterations to the ideal body weight formula over time. Dr. Pai conducts research on the optimization ...About This Calculator. Unlike the original CHADS2 score, which was based on a retrospective Medicare registry, CHA 2 DS 2-VASc prospectively included patients from multiple countries who were aged 18 years and older. 4 Patients were both ambulatory and hospitalized, and were followed for a total of 12 months.. CHADS 2-VASc Score and …Boca Raton: Chapman & Hall /CRC. How to cite this page. MedCalc Software Ltd. Odds ratio calculator. https://www.medcalc.org/calc/odds_ratio.php (Version 22.021 ... Oliver Blatchford, MD, PhD, MPH, is a consultant in public health medicine working at NHS Health Protection Scotland. He is also honorary senior lecturer in public health at the University of Glasgow. Dr. Blatchford is the specialist lead for tuberculosis control and researches causes of healthcare associated infection (HAI). To view Dr. Oliver ... Are you looking for a new place to call home in Laurel, MD? Townhomes are a great option for those who want the convenience of living in a single-family home without the hassle of ...Mission. The mission of the Medical Board of California is to protect healthcare consumers and prevent harm through the proper licensing and regulation of ... Join Us Scientific Advisory Board Editorial Board Careers Contributors. The Anion Gap calculator evaluates states of metabolic acidosis. This vancomycin calculator uses pharmacokinetic population estimates, Bayesian modeling, and the Sawchuk-Zaske method to calculate a vancomycin dosing regimen for an adult patient. Vancomycin regimens can be calculated both empirically (without any prior doses) or using one or two vancomycin levels. This calculator determines … MDCalc is a website that provides online calculators for various medical purposes. The Mean Arterial Pressure (MAP) calculator uses systolic and diastolic blood pressure values to estimate the mean arterial pressure. MD Anderson Cancer Center in Houston, TX is one of the most renowned cancer treatment and research facilities in the world. With its commitment to patient care, cutting-edge resear...The A/G ratio determines how the amount of albumin in blood compares with the other protein in blood, globulins. This ratio is a measure of liver and kidney function and can evidence any imbalances and offer clues about their potential causes, whether the ratio is high or low. A/G Ratio = Albumin in g/dL / (Total Protein in g/dL – Albumin in ...Take the bar exam with complete confidence—and pass. From intensive courses to to precise study resources, BarMD provides you with a complete test-taking toolbox. Equip yourself with highly effective online bar prep courses for California, New York, Texas, Pennsylvania, Colorado, Illinois, and all UBE jurisdictions. UBECA. If high suspicion for necrotizing fasciitis through clinical history and physical exam, do not calculate a LRINEC score and go straight to operative debridement. Note: Use with caution, as the LRINEC Score has performed poorly in external validation, most recently in Neeki 2017. When to Use. Unexplained iron deficiency anemia. Unintentional weight loss. Palpable abdominal mass or lymphadenopathy on exam. Family history of colon cancer and have not had age-appropriate colon cancer screening. Onset of symptoms age ≥50 years and have not had age-appropriate colon cancer screening. Sudden or acute onset of new change in bowel habit.MD Anderson Cancer Center in Houston, TX is one of the most renowned cancer treatment and research facilities in the world. With its commitment to patient care, cutting-edge resear...We use the in-hospital mortality outcome with the GRACE score. It helps us determine disposition in our STEMI patients; those with a score of 130 or higher go to the ICU after catheterization, and those with lower scores can go to our step down unit. We haven't had any bad outcomes and we've also saved a number of ICU beds this way for other ...Ensure proper room lighting and set phone brightness to 100%. Hold the screen 4 feet (1.2 m) from the patient (approximately the end of a standard hospital bed if patient is sitting upright). Test each eye independently. The patient should completely cover the opposite eye. See Pearls/Pitfalls for further instructions.Steps on how to print your input & results: 1. Fill in the calculator/tool with your values and/or your answer choices and press Calculate. 2. Then you can click on the Print button to open a PDF in a separate window with the inputs and results.You can further save the …These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients. Have feedback about this calculator? The Pulmonary Embolism Severity Index (PESI) predicts 30-day outcome of patients with pulmonary embolism using 11 clinical criteria.If you’re looking for a townhome to rent in Laurel, MD, you’re in luck. This city offers a variety of options for those seeking a comfortable and convenient place to call home. Bef...INSTRUCTIONS. Enter date of last menstrual period, gestational age (on today's date or other ultrasound date), date of conception, OR estimated due date to estimate the other …Caprini Score for Venous Thromboembolism (2005) Stratifies risk of VTE in surgical patients. Minor surgery does not refer to type of surgery but rather length of anesthesia <45 minutes. Major surgery refers to procedures with general or regional anesthesia time >45 minutes are included. These include open, laparoscopic, or arthroscopic procedures.There are several distinct Framingham risk models. MDCalc uses the 'Hard' coronary Framingham outcomes model, which is intended for use in non-diabetic patients age 30-79 years with no prior history of coronary heart disease or intermittent claudication, as it is the most widely applicable to patients without previous cardiac events.team. Calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for clinical judgment. See our full disclaimer. The Serum Ascites Albumin Gradient (SAAG) defines presence of portal hypertension (does not differentiate cause) in patients with ascites. Nearly every day +3. Becoming easily annoyed or irritable. Not at all 0. Several days +1. More than half the days +2. Nearly every day +3. Feeling afraid as if something awful might happen. Not at all 0. Several days +1. Enter date of last menstrual period, gestational age (on today's date or other ultrasound date), date of conception, OR estimated due date to estimate the other dates. Only EDD is affected by cycle length ≠28 days when calculating from LMP, EGA, and EDC. When starting with EDD, all results change depending on cycle length.If you own a Chevy vehicle in Salisbury, MD, you want to ensure that it receives the best possible service and maintenance. One dealership that stands out in terms of customer sati... MDCalc clinical decision support is created exclusively by board-certified physicians for use by physicians, physician assistants, nurse practitioners, pharmacists, and medical students. The simple yet sleek app provides access to 550+ easy-to-use clinical decision tools including risk scores, algorithms, equations, formulas, classifications ... team. Join Us Scientific Advisory Board Editorial Board Careers Contributors. The Duke Criteria for Infective Endocarditis provides standardized diagnostic criteria for endocarditis.Yes +1. Arterial pO2 <60 mmHg within 48 hours. No 0. Yes +1. Base deficit (24 - HCO3) >4 mg/dL within 48 hours. No 0. Yes +1. Fluid needs >6 L within 48 hours. No 0.“MD PA” is an acronym. The most common meaning for this acronym is medical doctor, professional association. A professional association is an unincorporated business that is formed...These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients. Have feedback about this calculator? The National Early Warning Score (NEWS) determines the degree of illness of a patient using six physiological findings and one observation.Join the title companies, banks, and attorneys that are already eRecording with us. Contact: Calvert County Treasurer’s Office. (410) 535-1600 ext. 2630. 175 Main Street. Prince Frederick, MD 20678.These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients. Have feedback about this calculator? The Urinary Protein Excretion Estimation quantifies 24-hour proteinuria using protein/creatinine ratio from a single urine sample.While originally derived in pediatric patients, this calculator is applicable to any age. Consider using ideal body weight in obese patients. If not calculating based on ideal body weight, use clinical judgment for dosing. A 1-liter bolus may be appropriate for most patients, such as overweight adolescents and adults. When to Use.Author: Chi-Ming Chow MD MSc FRCPC Developer: Edward Brawer BSc (Hons) Illustrator: Ellen Ho BFA. Disclaimer: The calculators provided are not meant to be a substitute for professional advise and are not to be used for medical diagnosis. All calculations must be confirmed before clinical use or diagnostic purposes by qualified medical professionals. The most important pitfall is using HAS-BLED as an absolute cut-off to withhold or withdraw anticoagulation. Keep in mind that in the vast majority of AF patients risk of stroke (and associated outcome) outweighs risk of bleeding. Instead, HAS-BLED should be used as an alarmbell which assists in minimizing the potential risk of bleeding by ... NEXUS doesn’t tell you when you have to image, it tells you when you’re allowed to not image. It’s purposefully vague (no definition of intoxication by alcohol level, no definition of distracting injury), because it’s meant to be used by a physician with good clinical judgment and gestalt. If you think they’re intoxicated, they’re ...This calculator is for use only in adult patients without known ASCVD and LDL 70-189 mg/dL (1.81-4.90 mmol/L). When to Use. Pearls/Pitfalls. Age. This calculator only applies to …He is currently investigating the inter-relationships between insulin resistance and beta cell function, and the effects of a low carbohydrate diet in people with and without type 2 diabetes at Churchill Hospital with the Center of Diabetes, in the United Kingdom. To view Dr. David R. Matthews 's publications, visit PubMed.Calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for clinical judgment. See our full disclaimer. The Endotracheal Tube (ETT) Depth and Tidal Volume Calculator estimates depth of optimal ETT placement and target tidal volume by height.Apr 25, 2019 · Quick Review. (1 star: lowest/5 stars: highest) Overall rating (1–5): 5. Content (1–5): 5. Usability (1–5): 5. Pros: This app allows immediate access to the latest clinical calculators and references, which are supported by evidence-based medicine. Cons: When using this app, it would be nice if the different calculators would be different ... MDCalc clinical decision support is created exclusively by board-certified physicians for use by physicians, physician assistants, nurse practitioners, pharmacists, and medical students. The simple yet sleek app provides access to more than 270 easy-to-use clinical decision tools including risk scores, algorithms, equations, formulas ...Join Us Scientific Advisory Board Editorial Board Careers Contributors. Calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for clinical judgment. See our full disclaimer. The PECARN Pediatric Head Injury/Trauma Algorithm provides the PECARN algorithm for evaluating pediatric head injury.License Alert Mobile App. Receive notifications when a doctor’s name, address, practice status, license expiration, or survey data changes, or when administrative actions or enforcement documents are added to a doctor’s profile. This information includes notification when a doctor is suspended, revoked, or placed on probation.The acronym FACC behind a doctor’s MD stands for Fellow of the American College of Cardiology, according to Aspirus Cardiovascular Associates. Doctors earn this title when two sepa... team. Join Us Scientific Advisory Board Editorial Board Careers Contributors. Calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for clinical judgment. See our full disclaimer. The MELDNa/MELD-Na Score for Liver Cirrhosis adds sodium to the MELD model to evaluate liver cirrhosis severity. Mar 29, 2023 ... In depth review of placement of a Central Line (Central Venous Catheter). Animation and narration by Cal Shipley, M.D.. team. Join Us Scientific Advisory Board Editorial Board Careers Contributors. Calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for clinical judgment. See our full disclaimer. The MELDNa/MELD-Na Score for Liver Cirrhosis adds sodium to the MELD model to evaluate liver cirrhosis severity. Steps on how to print your input & results: 1. Fill in the calculator/tool with your values and/or your answer choices and press Calculate. 2. Then you can click on the Print button to open a PDF in a separate window with the inputs and results.You can further save the …Prince Frederick, MD 20678. Directions. Mailing Address 175 Main Street Prince Frederick, MD 20678. Phone: 410-535-1600, ext. 2511. Fax: 410-535-2181. Interactive Maps. Historic Maps. Hard Copy Maps. Topo Map Series. Open GIS Data. Policies and Services. Other Resources. Tips and FAQs. Employment View current openings ...Bleeding history. Any history of GI bleeding, intracranial bleeding, or hemorrhagic stroke. No 0. Yes +2. GFR <60 mL/min/1.73 m 2. No 0. Yes +1. Treatment with antiplatelet agents. No 0.Child-Pugh Score for Cirrhosis Mortality. Estimates cirrhosis severity. Pearls/Pitfalls. Bilirubin (Total) <2 mg/dL (<34.2 µmol/L) +1. 2-3 mg/dL (34.2-51.3 µmol/L) +2. >3 mg/dL (>51.3 µmol/L) +3. Albumin. >3.5 g/dL (>35 g/L) +1.Charlson Comorbidity Index (CCI) Predicts 10-year survival in patients with multiple comorbidities. Intermittent claudication or past bypass for chronic arterial insufficiency, history of gangrene or acute arterial insufficiency, or untreated thoracic or abdominal aneurysm (≥6 cm) Severe = cirrhosis and portal hypertension with variceal ...Percentage of region affected. 0% (no active eczema in region) 0. 1-9% +1. 10-29% +2. 30-49% +3. 50-69% +4. 70-89% +5. 90-100% (entire region affected by eczema) +6. Upper limbs.Use in hemodynamically stable patients ≥18 years old. Treatment with therapeutic doses of anticoagulants initiated 24 hours or more before eligibility assessment. Life expectancy less than 3 months. Geographic inaccessibility precluding follow-up. Pregnancy (be sure to use pregnancy-adapted YEARS algorithm in the calc). These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients. Have feedback about this calculator? The Fractional Excretion of Sodium (FENa) determines if renal failure is due to pre-renal, intrinsic, or post-renal pathology. Are you looking for the perfect townhome to rent in Laurel, MD? If so, you’ve come to the right place. This insider’s guide will provide you with all the information you need to fi...There is no completely safe opioid dose, and this calculator does not substitute for clinical judgment. Use caution when prescribing opioids at any dosage, and prescribe the lowest effective dose. Conversions are based on the CDC Clinical Practice Guideline for Prescribing Opioids for Pain — United States, 2022.The A/G ratio determines how the amount of albumin in blood compares with the other protein in blood, globulins. This ratio is a measure of liver and kidney function and can evidence any imbalances and offer clues about their potential causes, whether the ratio is high or low. A/G Ratio = Albumin in g/dL / (Total Protein in g/dL – Albumin in ...MDCalc is a clinical decision support app that provides access to 550+ medical calculators for various specialties and conditions. Users can also earn CME credits, read expert …These are real scientific discoveries about the nature of the human body, which can be invaluable to physicians taking care of patients. Have feedback about this calculator? The National Early Warning Score (NEWS) 2 determines the degree of illness of a patient and prompts critical care intervention.Calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for clinical judgment. See our full disclaimer. The Endotracheal Tube (ETT) Depth and Tidal Volume Calculator estimates depth of optimal ETT placement and target tidal volume by height.Pupils possibly larger than normal for room light +1. Pupils moderately dilated +2. Pupils so dilated that only the rim of the iris is visible +5. Bone or joint aches. If patient was having pain previously, only the additional component attributed to opiate withdrawal is scored. Not present 0. Mild diffuse discomfort +1.Mar 29, 2023 ... In depth review of placement of a Central Line (Central Venous Catheter). Animation and narration by Cal Shipley, M.D..The score was originally called the Mayo End-Stage Liver Disease (MELD) model and was shown to be superior to the Child-Turcotte-Pugh score. At about the time we published the score, the Institute of Medicine determined that organ allocation for liver transplantation should no longer be based on waiting time but on an objective score that ...team. Calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for clinical judgment. See our full disclaimer. The Serum Ascites Albumin Gradient (SAAG) defines presence of portal hypertension (does not differentiate cause) in patients with ascites.Aaron K. Calodney, MD is past President of ASIPP, lecturer of FIPP, and has extensive training in neuromodulation.Bleeding history. Any history of GI bleeding, intracranial bleeding, or hemorrhagic stroke. No 0. Yes +2. GFR <60 mL/min/1.73 m 2. No 0. Yes +1. Treatment with antiplatelet agents. No 0.If you’re in the market for a new or used car in Silver Spring, MD, you’ll find plenty of options to choose from. However, one dealership that stands out from the rest is Koons For...
The Steroid Conversion Calculator converts steroid dosages using dosing equivalencies.. Clarity app
team. Join Us Scientific Advisory Board Editorial Board Careers Contributors. Calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for clinical judgment. See our full disclaimer. The Sodium Correction for Hyperglycemia Calculates the actual sodium level in patients with hyperglycemia.Yes +1. Renal disease. Dialysis, transplant, Cr >2.26 mg/dL or >200 µmol/L. No 0. Yes +1. Liver disease. Cirrhosis or bilirubin >2x normal with AST/ALT/AP >3x normal. No 0. Yes …cal-psychiatry-logo-blue-semicircle-black-letters ... Nancy Wu, M.D.. We're here to help you find a ... READY TO MAKE A CHANGE? BOOK AN INQUIRY CALL. Follow; Follow ...Boca Raton: Chapman & Hall /CRC. How to cite this page. MedCalc Software Ltd. Odds ratio calculator. https://www.medcalc.org/calc/odds_ratio.php (Version 22.021 ...If you’re looking for a townhome to rent in Laurel, MD, you’re in luck. This city offers a variety of options for those seeking a comfortable and convenient place to call home. Bef...Adolf E. Fick, MD, (d. 1901) was a physiologist at the University of Zurich in Switzerland. Dr. Fick’s research focused primarily on physiology and medical physics. Have feedback about this calculator? The Fick Formula calculates cardiac …While originally derived in pediatric patients, this calculator is applicable to any age. Consider using ideal body weight in obese patients. If not calculating based on ideal body weight, use clinical judgment for dosing. A 1-liter bolus may be appropriate for most patients, such as overweight adolescents and adults. When to Use.We use the in-hospital mortality outcome with the GRACE score. It helps us determine disposition in our STEMI patients; those with a score of 130 or higher go to the ICU after catheterization, and those with lower scores can go to our step down unit. We haven't had any bad outcomes and we've also saved a number of ICU beds this way for other ...In order to apply for Denti-Cal one must complete and submit a completed application package. Applicants can download the application package, including complete instructions on ho...If you’re in the market for a new or used car in Silver Spring, MD, you’ll find plenty of options to choose from. However, one dealership that stands out from the rest is Koons For...Charlson Comorbidity Index (CCI) Predicts 10-year survival in patients with multiple comorbidities. Intermittent claudication or past bypass for chronic arterial insufficiency, history of gangrene or acute arterial insufficiency, or untreated thoracic or abdominal aneurysm (≥6 cm) Severe = cirrhosis and portal hypertension with variceal ...MDCalc Apps is a mobile app that provides access to over 270 evidence-based clinical decision tools, such as calculators, algorithms, and scores. You can search, sync, and …His research focused on kidney disease and metabolism and regulatory control of fluids and electrolytes. Have feedback about this calculator? The Urine Output and Fluid Balance calculates urine output over a 24 hour period and fluid balance based on urine output (assuming no other fluid losses).Both scores demonstrated a good discrimination between low- and high-risk patients (cumulative rate of VTE and VTE-related death at 90 days post-discharge 3.5 vs. 1.1% [p=0.002] in high- vs. low-risk patients according to PPS). Many of the patients that developed VTE during your study had active cancer.On this page, you'll find the original MELD Score (Pre-2016), MELD Na (UNOS/OPTN), and MELD 3.0. MELD Na is the current standard calculation for organ transplantation consideration in the United States. MELD 3.0 better accounts for disparities in organ allotment based on sex. When to Use. Pearls/Pitfalls. Equation. MELD Score (Original, …The BMI and BSA calculators estimate the Body Mass Index and Body Surface Area.If you’re in the market for a new or used vehicle in Salisbury, MD, look no further than Hertrich Chevy. With a wide selection of reliable and stylish vehicles to choose from, Hert...Calculations must be re-checked and should not be used alone to guide patient care, nor should they substitute for clinical judgment. See our full disclaimer. The Sgarbossa’s Criteria for MI in Left Bundle Branch Block diagnoses acute MI in patients with prior Left Bundle Branch Block (LBBB).Feb 9, 2024 ... Certain admissions were recorded in terms of s 220 of the CPA, whereafter the state led evidence from several witnesses and the appellant was ...MDCalc is a clinical decision support app that provides access to 550+ medical calculators for various specialties and conditions. Users can also earn CME credits, read expert …Pack Years Calculator. When to Use. Packs of cigarettes smoked per day. 1 pack = 20 cigarettes (e.g. enter 2 for 40 cigarettes/day) packs. Years the patient has smoked..